A Takfiri insurgency that erupted in the north of the vast West African country in 2012 has swept to its center, inflaming ethnic tensions along the way.
Clashes between the ethnic communities of Fulani, nomadic herders, and Dogon traditional hunters have increased in recent months, with community-based militias -- initially formed for defense -- now launching attacks.
Armed uniformed men traveling in pick-up trucks attacked four Dogon villages on Wednesday, one local official said by telephone, speaking on condition of anonymity for security reasons.
The attack left at least 30 dead, including women, children, and the elderly, while others were missing, the official added.
"From 3 to 9 pm, nobody came to our rescue," said Youssouf Tiessogue, an elder from Gouari, one of the villages attacked.
Deploring the army's "inaction," he said: "It is always late and never confronts the bandits even if we tell them where they are."
A senior government official called the attacks "barbaric".
Officials did not immediately blame any group.